Table 1.

Diarrhoeal status of rabbits infected with wild type V. cholerae or the ΔacfC mutant.

Bacterial strain	WT	ΔacfC
Diarrhoea (%)	67	100
Diarrhoea score a
Severe	10	19
Mild	2	0
None	6	0
Total no. of animals	18	19
P valueb	0.008
FARc	1.51 ± 0.68	2.09 ± 0.96
P valued	0.09

^aNumber of rabbits with diarrhoea as described in the text.

^bFisher’s exact test was used to compare the number of WT-infected rabbits with disease versus the ΔacfC mutant.

^cFluid accumulation ratio (FAR) is calculated from the weight of the cecal fluid to the tissue for each animal.

^dStudents 2-sided T test.